more suggestions ......
Reduce the dimension at the tip to 1" and increase the dimension at the vertical to 4". Definitely attach all the supports to the 2 X 2 before screwing it to the wall! Make them all identical. Use either a taut string that is leveled out or a laser level to mark all the bottoms of the supports on the wall. Then attach the verticals to the studs. Of course you must locate the studs prior to any of this.
The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
Last edited by woodnthings; 03-11-2018 at 09:07 PM.